MESON Chess Problem Database

Problem Display
PID: 2681 (3r4/5Q2/1B2p1B1/4kPR1/p7/KbN5/8/8 w - - 0 1)

Shinkman, William Anthony

Source?, 0000

3r4/5Q2/1B2p1B1/4kPR1/p7/KbN5/8/8

#2

7 + 5

3925 The Golden Argosy 1929

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qc7#
    • 1...Rd6
      • 2.fxe6#
  • Tries
    • 1.Qxe6+?
      • 1...Kf4
        • 2.Qe3#
      • 1...Bxe6!
    • 1.Qc7+?
      • 1...Kf6
        • 2.Se4#
      • 1...Rd6!
    • 1.Qg7+?
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf4!
    • 1.f6+?
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf4!
  • Keys
    • 1.Se4!
      • threat
        • 2.fxe6#
      • 1...Kxe4
        • 2.fxe6#
      • 1...Kf4
        • 2.fxe6#
      • 1...Kd5
        • 2.Qxe6#
      • 1...exf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(c);S_FLIGHT::QAB1(G)
    • R(e);SBLOCK::R(D)+P(C),XP(d)
  • Tries
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(G)
      • Refutation
        • B(a);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT::S(B)
      • Refutation
        • R(e);P_SPINR(e)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • R(D)+P(C),XP(d)
    • Vars
      • K(c);P-FLIGHT,XS(B)::B(F)+P(C),XP(d)
      • K(c);S_FLIGHT::QAR(G)+P(C),XP(d)
      • K(c);P-FLIGHT,P_SPINP(d)::QAB1(G),XP(d)
      • P(d);OGATE,P_SPINP(d),XP(C)::QAR1(G),XP(d)
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